Adjectives describe or modify nouns and pronouns. They answer what kind, which one, or how many. Articles like a, an, the are also adjectives. Proper adjectives come from proper nouns. Demonstrative adjectives are the same as demonstrative pronouns. Comparative adjectives compare two things using -er, and superlative adjectives compare more than two things using -est or more/most. Good is an adjective describing kind, while well describes health as an adjective or manner as an adverb.